Turret tool-post for engine-lathes.



- H. NEWMANN,

TURRET TOOL POST FOR ENGiNE LAIHES.

APPLICATION FILED DEC.23, 1916.

' Patented Dec. 18, 191?.

2 SHEETS-SHEET I.

3&4, mm;

H. NEWMANN.

TURRET TOOL POST FOR ENGINE LATHES.

APPLICATION FILED DEC-23,1916- 1,250,490a Patented Dec. 18, 1917.

2 SHEETS-SHEET 2- awuewtoz k "l5 $1; ,5 ilk km;

TE IiATENI OFFICE;

HERMANN newt/tanner {a aemia roan,

runner rooL-rosrf role h To all whomz't may concern: I

Be it known that I, HERMANN NEWMANN, a citizen ofthe German Empire, andafresident of Brooklyn, in the cojuntyof Kings and State of New York,have invented certain new and useful lmprovements in Turret Tool-PostsforEngine-Lathes, of which the followingis a specification. h v a a Thisinvention relatestoa turret tool post of novel construction,- moreparticularly adapted to be securedto the slide rest of an engine lathe;The invention comprises novel means for centering the device novelfmeansforv setting the tool-head, and novel means for securing the tools tosaid head, allas niorefully pointed out and appended claims.

:' In the vaccompanying r drawingfz i Figurefl is a verticallongitudinal. section online' ofa turret tool post embodying myinvention i 2,,a side elevation partly in seetion thereof," y it J V w3, 21. right hand. end vjew;

Fig.4, a plan, partly in section; j v igavertical crosssection on line 5-5 tool head settingineanaand i -'7, tai of P unger a As morefullydescri-bed in Patent 1195$9O issued to me August 22, 191 6, thecylindrical block 1010f the tool post is provided withprojectadistancebeyondloothends of the block; Vertically through the bl oekextends a screw bolt 12; the lower threaded end of which is engagedby1a'n ut1 1f3,,the head 14 of which in turn engages the slide rest 15.The

shank of the nut is above the slideirestg en-' compassed by a tubularsleeve 16, counters sunk into block 10, and threaded to the same.

In order to raise or lower block 10 so as to center spindle 11 oppositethe lathe, it

was heretofore necessary to slip the device.

off the slide'rest, and thus expose sleeve 16, which was then turned byhand. Bythe construction which is the subject matter of I thisinvention, this manipulation is obviated, the nut being adapted to beset without requiring the removal of the tool post from the slide rest.For this purpose, sleeve 16 is furnished on its upper side with aperipheral flange having an internal gear 17 which is engaged by apinion 18, fast on the lower in the specification ig. 6, alongitudinalsection through the boreofblock 10,-;and isheaded onitsupper exposedlend. l 1 :T

In ,order to center theblock, bolt" 124s" slackened; and then shaft 19,manipulated,-

nted Dec.'18',-191 7," Applicaticuifiled December 23,1916.Seria1No.1-38,5 67. 1 v I 3 end or ashaft 19, which status wastoyturnsleeve l61by means =ofpinion 18,uso'

thatv in this Way, :the desired-vertical adjust ment of the blockrelatively to the slide restv may beiaccomplished in a simple and accu=rate manner.

To the exposed; right hand end of spiii'dle.

1; l, there is fitted the tool head. 20,-which is furnished. on its"innerface with a toothed.- rim, 21, adapted to beengagedaby: a:springcontrolled ;bolt 22 housed-withinbldcklO',v the position ofthexteeth o-n ri1n21 corre sponding to the-position, of thetoolholder'sl In order .;to turncarried r by V the 7 head. spindle .11axially and thus present the tool desired to the work-there isthreadedon the? exposed left hand end ofspindle 11,-anut 23,;whiehin turn isengaged ,byj am nuts 24,; Nut/23 is-encompassed by the eye oriannulus 25of ,ahollow handle 26, said annulus being furnishedQWith an archedgroove 27 which is-eccentric to nut 23., This groove acconi-. i,

modates a roller or clutch member 28,. which is adapted to be straddledbiy'the forked in ner end of a plunger 29, aXiallymovable within hollowhandle 26, the. movement of v zlvrp l gel being defined by" apin 3.0 and.sll' WBv 3. r

The: plunger protrudesfrom 2:6,;

and by depressingthe; plunger, and. oscillate h reby i partspindle '11.

sition, it is provided; with a central con- ;9O ing the f handle, roller28 :will be jammed againstjnut 23,;to turn the same,'a -nd ,to' a a;fcorresponding turn to.

tracted' section or neck 32, engaged by a stop 33'fast on a pin 34,which is accommodated vvithin a bore of plunger 29. This pin isdepressed by a spring 34* housed with- Y in the plunger, the springlikewise tending to normally throw the lattter outward and thus out ofengagement with the roller.

Tool head 20 is furnished with novel' 7 means for securing thereto aplurality of differently constituted tools. Thus for vaocommodatingtools that extend from the head in parallelism with its axis, the headis furnished with a plurality of apertures or seats 35, the walls ofwhich are straight along the inner moiety of the seat, and here convergetoward a sharp edge. The wall on the outer moiety of the seat issemicircular, and is tapped for the accommodation of a set screw 36. Thecircular shank 37 of the tool will be forced by the set screw againstthe two straight rear walls, so that in this way, the shank will betangentially engaged by said faces and be thus securely clamped inposition'at three points.

For the purpose of securing to head 20, a tool that extends radiallytherefrom, there is sunk into the outer face of the head, a holder 38which is pivoted to the head by bolt 39. This'holder is furnished withan adjusted. In order to accommodate tool shanks of different crosssections the bore of the holder is enlarged or squared along one side asat42 (Fig. 2) and contracted or oblongish along the other side as at 43,the

oblong section opening into the squared section. Thus a set screw 44threaded into the holder, may clamp. thereto, an oblong tool shank 45,while a somewhat longer set screw, may clamp thereto a squared toolshank.

In order to secure a cut off tool 46 to head 20, there is provided asplit clamp, formed of a pair of resilient'taperingjaws 47, thatareadapted to be drawn against a correspondingly taperedseat 48 of thehead. For this purpose, there extends rearwardly from jaws 47, a bolt 49on which is threaded a nut 50, that engages the back of the head, sothat by manipulating the nut, the jaws may either be relaxed or drawntoward each other.

I claim:

1. A turret tool post, comprising a block, a horizontal spindlejournaled therein, a tool head carried by the spindle, a vertical screwbolt extending through the block, a nut carried by the bolt, a threadedsleeve engaging the block and encompassing the bolt, and a shaftrotatable within the block and intergeared with the sleeve. i r

2. A turret tool post, comprising a block,

Copies of this patent maybe obtained for five cents each, by addre'sWashington, D. 0.

a horizontal spindle journaled therein, a

tool head carried by the spindle, a vertical screw bolt extendingthrough the block, a nut carried by the bolt, a threaded sleeve engagingthe block and encompassing the bolt, said sleeve being provided at itsupper face with an internally toothed flange, a shaft rotatable withinthe block and protruding therefrom, and a pinion carried by said shaftand engaging said flange.

3. A turret tool-post, comprising a block, a spindle journaled therein,a tool head carried by one end of the spindle, a nut threaded onthe'other end of'the spindle, an eyed handle encompassing the nut, aclutch member engaging the'nut, and'a plunger axially movable within thehandle and adapted to engage said clutch member.

4. 'A turret tool post, comprising a block,

a spindle journaled therein, a tool head carriedby one end of thespindle, a nut threaded on the other end of the spindle, an eyed handleencompassing the nut, a clutch roller having a neck and engaging thenut, a forked plunger axially movable within the handle and adapted toengage the clutch roller, and a-spring-controlled stop carried bytheplunger and engaging the roller n ck.

5. Aturret tool post comprising ablock, a. spindle journaled therein, aheadcarried by the spindle, a tool holderpivoted to the head, saidholder having a tail piece, and a set screw tapped into said tail pieceand engaging the head. 7

6. A turret tool post comprising a block,

a spindle journaled therein, a head carried by the spindle, a toolholder pivoted to the head, said holder having a" resilient tail piece,and a set screw tappedinto said tail piece and engaging the head.

7. A turret tool post comprising a block, a spindle journaled therein,an eyed head: carried by the spindle, a tool holder pivoted to'the head,saidholder'having an arched tail piecethat extends along the eye of thehead, and a set screw tapped into said tailpiece and engaging the eye. VHERMANN NEWMANN.

sing the Commissioner of Patents,"

